+external drop_caches : t -> int -> unit = "ocaml_guestfs_drop_caches"
+external dmesg : t -> string = "ocaml_guestfs_dmesg"
+external ping_daemon : t -> unit = "ocaml_guestfs_ping_daemon"
+external equal : t -> string -> string -> bool = "ocaml_guestfs_equal"
+external strings : t -> string -> string array = "ocaml_guestfs_strings"
+external strings_e : t -> string -> string -> string array = "ocaml_guestfs_strings_e"
+external hexdump : t -> string -> string = "ocaml_guestfs_hexdump"
+external zerofree : t -> string -> unit = "ocaml_guestfs_zerofree"
+external pvresize : t -> string -> unit = "ocaml_guestfs_pvresize"
+external sfdisk_N : t -> string -> int -> int -> int -> int -> string -> unit = "ocaml_guestfs_sfdisk_N_byte" "ocaml_guestfs_sfdisk_N"
+external sfdisk_l : t -> string -> string = "ocaml_guestfs_sfdisk_l"
+external sfdisk_kernel_geometry : t -> string -> string = "ocaml_guestfs_sfdisk_kernel_geometry"
+external sfdisk_disk_geometry : t -> string -> string = "ocaml_guestfs_sfdisk_disk_geometry"
+external vg_activate_all : t -> bool -> unit = "ocaml_guestfs_vg_activate_all"
+external vg_activate : t -> bool -> string array -> unit = "ocaml_guestfs_vg_activate"